// MainActivity.kt
package com.example.weather

import android.content.Intent
import android.os.Bundle
import android.util.Log
import android.widget.ArrayAdapter
import androidx.activity.enableEdgeToEdge
import androidx.appcompat.app.AppCompatActivity
import androidx.core.view.ViewCompat
import androidx.core.view.WindowInsetsCompat
import com.google.gson.Gson
import com.google.gson.reflect.TypeToken
import java.io.BufferedReader
import java.io.InputStreamReader
import kotlin.concurrent.thread

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        enableEdgeToEdge()
        setContentView(R.layout.activity_main)
        val listView = findViewById<android.widget.ListView>(R.id.listView)

        thread {
            val str: String? = readFileFromRaw(R.raw.citycode)
            val gson = Gson()
            val CityType = object : TypeToken<List<CityItem>>() {}.type
            var cities: List<CityItem> = gson.fromJson(str, CityType)
            cities = cities.filter { it.city_code.isNotEmpty() }

            runOnUiThread {
                val adapter = ArrayAdapter<CityItem>(this, android.R.layout.simple_list_item_1, cities)
                listView.adapter = adapter
                listView.setOnItemClickListener { _, _, position, _ ->
                    val cityCode = cities[position].city_code
                    Log.d("MainActivity", "Selected city code: $cityCode")
                    val intent = Intent(this, MainActivity2::class.java)
                    intent.putExtra("city_code", cityCode)
                    startActivity(intent)
                }
            }

            Log.d("MainActivity", "cities: $cities")
        }
    }

    fun readFileFromRaw(rawName: Int): String? {
        try {
            val inputReader = InputStreamReader(resources.openRawResource(rawName))
            val bufReader = BufferedReader(inputReader)
            var line: String?
            val result = StringBuilder()
            while (bufReader.readLine().also { line = it } != null) {
                result.append(line)
            }
            return result.toString()
        } catch (e: Exception) {
            e.printStackTrace()
        }
        return ""
    }
}